Seasonic Focus G12 GM power supply unit 850 W 20+4 pin ATX ATX BlackThe G12 GM Series is available in the standard ATX Form Factor and in wattages that are most common for a PC system. The Seasonic G12 GM Series achieves 80 PLUS Gold standard of providing at least 87 %, 90 % and 87 % power usage efficiency at 20 %, 50 % and 100 % operating loads, respectively. This efficiency, combined with Active Power Factor Correction, enables the G12 GM series power supplies to lessen energy waste, which translates into savings on